西方国家,在动心脏或大脑的大手术时,大多用寒冷麻醉法。方法是患者全身要处于冰水中,使血压下降,以减少氧气消耗量。这样既使心脏停止跳动数分钟,仍不致死亡。再者,大脑处在寒冷状态下,氧气需用量相应减少(可减少至四分之一),因而能有机会生存下去。但此种手术亦容易带来其它的并发症因寒冷麻醉,会使病人的抵抗力减退,容易引起肺炎等症。故在寒冷麻醉手术进行后,大多让病人安静,并立刻补充营养剂,以恢复元气。暑热天时,于人亦有刺激反应病。本来,从脑下垂体前叶,向副肾皮质分泌荷尔蒙质,再由副肾内的盐分、水分加以控制而把荷尔蒙质放出。但在炎热夏季,此种分泌与放出因失去平衡而紊乱的话,便容易 Western countries, in the heart or brain surgery, mostly with cold anesthesia. The method is the patient’s body to be in ice water, blood pressure, in order to reduce oxygen consumption. This will not only cause the heart to stop beating for a few minutes, still not die. Furthermore, when the brain is in a cold state, the amount of oxygen needed is correspondingly reduced (down to a quarter) so that there is a chance to survive. However, this kind of surgery is also easy to bring other complications due to cold anesthesia, will make the patient’s resistance diminished, easily lead to pneumonia embolism. Therefore, in the cold anesthesia surgery, most of the patient quiet, and immediately add nutrients to restore strength. Heat days, people also have a stimulus response. Originally, from the anterior pituitary gland, to the renal cortex secretion of hormone quality, and then from the Vice kidney salt, water and to control the release of the hormone. However, in the hot summer, such secretion and release due to loss of balance and disorder, then it is easy